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KMID : 1007520200290101389
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Food Science and Biotechnology
2020 Volume.29 No. 10 p.1389 ~ p.1399
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Characteristics of wheat starch?pectin hydrolysate complexes by dry heat treatment
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Kang Eun-Jung
Bae Ji-Eun
Hong Jung-Sun
Choi Hee-Don
Choi Hyun-Wook
Lee Jae-Kwon
Kim Hyun-Seok
Park Ji-Yong
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Abstract
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The objective of this study was to characterize dry heat-induced wheat starch?pectin hydrolysate (WST/PH) complexes to develop the retrogradation-retarded starch. Native (N-) and protease-treated (P-) WST were used as starch sources. Pectin hydrolysates were mixed independently with N-WST and P-WST to a mixing ratio of 49:1 (based on total solid contents), followed by drying below 10% moisture and dry heat treatment at 130 °C for 4 h. The molar degrees of substitution (MS) was higher for WST/PH complexes than its mixtures, and apparent amylose contents decreased with their MS. Relative to WST/PH mixtures, solubilities were higher for WST/PH complexes, while swelling powers didn’t differ. WST/PH complexes showed the lower degree of retrogradation, setback viscosities, slowly gelling tendency, and syneresis. These phenomena were more pronounced in WST/PH mixtures and complexes prepared with P-WST. Overall results suggest that dry heat-induced WST/PH complexes could be a potential retrogradation-retarded starch to replace chemically-modified starches.
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KEYWORD
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Wheat starch, Pectin hydrolysate, Dry heat reaction, Dry heat-induced wheat starch?pectin hydrolysate complex, Retrogradation
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